OK, here is the latest GOOD version of BD3D2MK3D, that includes tsMuxeR v2.6.9 again.
I have not updated the version number, as BD3D2MK3D itself has not changed. Please download this version if you have already downloaded v1.5 before today, January 15, 2018 at 19:10 GMT.
Download:
BD3D2MK3D.7z